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Taiwan Semiconductor Corporation SS26ALH
- Part No.:
- SS26ALH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-221AC, SMA Flat Leads
- Datasheet:
-
SS26ALH.pdf
- Description:
- 2A, 60V, SCHOTTKY RECTIFIER
- Quantity:
- Payment:
- Shipping:
Inventory:2,013
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Product details
Overview
SS26ALH from Taiwan Semiconductor is a 2 A, 60 V Schottky barrier surface-mount rectifier in Thin SMA package, featuring low forward voltage (0.60 V at 2 A, 25°C), high surge capability (145 A at 1 ms), AEC-Q101 qualification, and junction temperature rating up to 150°C - used in automotive-grade DC/DC converters and industrial SMPS.
For engineers reviewing the SS26ALH datasheet, SS26ALH pinout, SS26ALH application, or SS26ALH equivalent, key selection criteria include its 60 V repetitive peak reverse voltage, 0.60 V forward drop at rated current, thermal resistance (RθJL = 21°C/W), AEC-Q101 qualification, and Thin SMA mechanical compatibility with automated SMT assembly.
Technical Context
The SS26ALH is a single-die Schottky rectifier optimized for high-frequency switching applications where low conduction loss and fast recovery are critical. Its 60 V VRRM, 2 A continuous forward current, and 145 A non-repetitive surge rating support robust operation in compact power stages.
Thermal performance is defined by RθJL = 21°C/W and RθJA = 78°C/W on a 5 mm × 5 mm Cu pad PCB, enabling reliable thermal management in space-constrained designs. Reverse leakage remains ≤200 µA at 25°C and ≤40 mA at 125°C under rated VR.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 60 V - maximum repetitive reverse blocking voltage; defines safe operating range in buck/flyback secondary-side rectification |
| IF | 2 A - continuous forward current rating; supports sustained output delivery in 12–24 V DC/DC modules |
| IFSM (t = 1.0 ms) | 145 A - short-duration surge capability; handles inrush and transient overloads without failure |
| VF @ 2 A, 25°C | 0.60 V max - low conduction loss reduces power dissipation and improves efficiency in high-duty-cycle operation |
| TJ max | +150°C - extended junction temperature enables use in under-hood automotive and industrial environments |
| RθJL | 21°C/W - low junction-to-lead thermal resistance allows effective heat transfer to PCB copper, simplifying thermal design |
| CJ | 95 pF @ 1 MHz, 4 V - low junction capacitance minimizes switching losses and EMI in >100 kHz converters |
Pinout & Package
Package: Thin SMA - surface-mount, single-anode/single-cathode configuration with cathode band marking; moisture sensitivity level 1 (J-STD-020), RoHS and halogen-free compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Input terminal for forward conduction path | Connected to source/switch node; must handle full load current and thermal stress |
| Cathode | Output terminal for forward conduction path | Connected to output rail or filter capacitor; polarity marked by visible band on package |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive electronics per stress test requirements - enables use in ADAS, body control, and infotainment power rails |
| Low VF (0.60 V max @ 2 A) | Reduces conduction loss by ~30% vs. comparable 60 V Si diodes, improving system efficiency and reducing heatsink need |
| High IFSM (145 A, 1 ms) | Withstands severe input transients and startup surges without degradation - critical for unregulated input stages |
| Thin SMA package | Enables high-density layout with minimal board area; compatible with standard SMA reflow profiles and pick-and-place equipment |
| Moisture sensitivity level 1 | Eliminates bake requirement prior to reflow - reduces manufacturing cost and process complexity |
Applications
| Automotive On-Board DC/DC Converter | Industrial Switching Mode Power Supply |
|---|---|
Use Scenario: Step-down conversion from 12 V or 24 V battery to 3.3 V/5 V for microcontrollers and sensors in engine control units. IC Role / Device Role / Timing Role: Secondary-side synchronous rectifier replacement; provides unidirectional current flow with minimal voltage drop. Use Value: 0.60 V forward drop at 2 A lowers power loss by >0.5 W vs. legacy Si diodes, directly improving thermal margin in sealed enclosures. | Use Scenario: Output rectification in 50–200 W open-frame AC/DC adapters powering factory automation controllers. IC Role / Device Role / Timing Role: High-efficiency freewheeling diode in flyback and forward converter topologies. Use Value: 145 A surge rating ensures reliability during line-voltage transients and hot-plug events common in industrial mains environments. |
| LED Driver Power Stage | Telecom DC/DC Module |
Use Scenario: Constant-current regulation stage in outdoor LED streetlight drivers exposed to wide ambient temperature swings. IC Role / Device Role / Timing Role: Output rectifier in isolated buck-boost LED driver with 12–48 V input range. Use Value: +150°C junction rating and <40 mA leakage at 125°C maintain stable light output and prevent thermal runaway in high-ambient installations. | Use Scenario: Intermediate bus conversion (48 V to 12 V) in telecom base station power shelves with strict efficiency targets. IC Role / Device Role / Timing Role: Primary output rectifier in high-frequency phase-shifted full-bridge or LLC resonant converters. Use Value: 95 pF junction capacitance limits displacement current and EMI generation, easing compliance with EN 55032 Class B limits. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Vishay VS-2EY60-M3/57T | Same 60 V VRRM, 2 A IF, but VF = 0.65 V max @ 2 A; SMA package, not AEC-Q101 qualified | Lacks automotive qualification; suitable for commercial/industrial only | Select when AEC-Q101 is not required and slightly higher VF is acceptable |
| ON Semiconductor SB260-E3/54 | 60 V VRRM, 2 A IF, VF = 0.72 V max @ 2 A; DO-214AA package, not AEC-Q101 qualified | Larger DO-214AA footprint; no automotive qualification or moisture level 1 rating | Choose only if board layout accommodates larger package and automotive compliance is unnecessary |
Compared with VS-2EY60-M3/57T and SB260-E3/54, the SS26ALH delivers lower forward voltage, AEC-Q101 qualification, and moisture level 1 handling - making it the preferred choice for automotive and high-reliability industrial designs where thermal efficiency and process robustness are critical.
Availability
SS26ALH is available at Aetrix Electronics and suitable for automotive on-board DC/DC converters, industrial switching mode power supplies, and LED driver power stages requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for SS26ALH includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Taiwan Semiconductor Corporation (TSC) is a vertically integrated analog and discrete semiconductor manufacturer headquartered in Hsinchu, Taiwan, serving global automotive, industrial, and consumer markets since 1979.
The SS26ALH belongs to TSC's AEC-Q101-qualified Schottky rectifier product line, engineered specifically for high-efficiency, high-reliability power conversion in thermally demanding and safety-critical applications.
FAQ
What is the maximum junction temperature rating for SS26ALH?
The SS26ALH has a maximum junction temperature (TJ) rating of +150°C, verified per absolute maximum ratings table in the official datasheet. This allows reliable operation in under-hood automotive environments and enclosed industrial power supplies where ambient temperatures exceed 85°C. The SS26ALH maintains specified electrical performance up to this limit when thermal design respects RθJL = 21°C/W and proper PCB copper area is used.
Is SS26ALH AEC-Q101 qualified?
Yes, the SS26ALH is explicitly AEC-Q101 qualified as stated in the FEATURES section of the official Taiwan Semiconductor datasheet (Version B2103). This qualification covers stress tests including HTGB, HTRB, TCT, and ESD, confirming suitability for automotive power electronics such as body control modules and ADAS subsystems. The SS26ALH carries this qualification out-of-the-box - no additional screening is required.
What is the forward voltage of SS26ALH at 2 A and 125°C?
The SS26ALH exhibits a forward voltage of 0.54 V (typical) and 0.62 V (maximum) at 2 A and 125°C, per the ELECTRICAL SPECIFICATIONS table. This elevated-temperature VF remains significantly lower than silicon diodes, preserving efficiency in thermally stressed conditions. The SS26ALH's VF temperature coefficient is negative, meaning conduction loss decreases as junction temperature rises - a key Schottky advantage reflected in these values.
Does SS26ALH have a moisture sensitivity level rating?
Yes, the SS26ALH is rated at Moisture Sensitivity Level (MSL) 1 per J-STD-020, confirmed in the MECHANICAL DATA section. This means the device can be stored indefinitely at ≤30°C/85% RH and requires no baking before reflow soldering - simplifying SMT line integration and reducing manufacturing risk. The SS26ALH's MSL 1 status is intrinsic to its Thin SMA packaging and molding compound.
What is the junction-to-lead thermal resistance (RθJL) of SS26ALH?
The SS26ALH has a typical junction-to-lead thermal resistance (RθJL) of 21°C/W, measured per JEDEC standards on a 5 mm × 5 mm copper pad PCB. This low value enables efficient heat transfer from the die to the PCB leads, supporting higher power density layouts. When designing with SS26ALH, this RθJL value - not RθJA - should be used for thermal modeling of lead-attached thermal paths.
SS26ALH Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- DO-221AC, SMA Flat Leads
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 60 V
- Current - Average Rectified (Io):
- 2A
- Voltage - Forward (Vf) (Max) @ If:
- 700 mV @ 2 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 200 µA @ 60 V
- Capacitance @ Vr, F:
- 95pF @ 4V, 1MHz
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- Thin SMA
- Operating Temperature - Junction:
- -55°C ~ 150°C
SS26ALH FAQ
1.How can I place an order for SS26ALH through Aetrix?
Please submit a Request for Quotation (RFQ) for SS26ALH on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for SS26ALH reliable?
The price and inventory of SS26ALH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SS26ALH is usually 5 days.
3.What payment methods are accepted for SS26ALH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SS26ALH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SS26ALH?
SS26ALH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SS26ALH order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for SS26ALH?
For technical support, including SS26ALH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SS26ALH requirements.
6.How does Aetrix verify that SS26ALH is sourced from the original manufacturer or authorized distributors?
All SS26ALH products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that SS26ALH meets industry standards.
7.What is the process for return or replacement of SS26ALH?
All SS26ALH units undergo pre-shipment inspection (PSI). If there is an issue with SS26ALH, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The SS26ALH part is unused and in its original packaging.
Return procedure for SS26ALH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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